Theodobe butlee



(ModeL) I T. BUTLER;

SPRING HINGE.

N'b.-254;1'09. Patented Feb.28,1882.

WITNESSES INVENTOR N. puns. Pmwumn m m Washingmn. no

UNITED STATES- PATENT OFFICE.

THEODORE BUTLER, OF OLEVELAND, OHIO, ASSIGNOR TO THE BUTLER DOOR SPRING COMPANY, OF SAME PLACE.

HINGE.

SPEGIFIGATION forming part of Letters Patent No. 254,109, dated February 28, 1882.

Application filed September 13, 1881. (ModeL) To all whom it may concern:

Be it known that I, THEODORE BUTLER, of Cleveland, in the county of Ouyahoga and State of Ohio, have invented certain new and useful Improvements in Hinges; and I do hereby declare the following to be a full, clear, and exact description of the invention, such as will enable others skilled in the art to which it pertains to make and use it,reference being bad to the accompanying drawings, which form part of this specification.

My invention relates to spring-hinges; and it consists inthe peculiar construction of the same, as will be hereinafter fully set forth and claimed.

In the drawings, Figure 1 is a front elevation of a hinge embodying my invention. Fig. 2 is a rear view of the same. Fig. 3 is a crosssection taken on line 00 00, Figs. 1 and 2; and Fig. 4 is a vertical section taken on line y Figs. 1 and 2.

A and B are two leaves of a hinge, which are pivotally attached one to the other by means of the pintle O, which passes through the center of the knuckles a, b, c, and 01.

Between the knuckles b and c and surrounding the pintle O is a spiral spring, D, the lower end fitting over a spigot extending upward from the knuckle 0. At this lower end the wire forming the spring is made to extend out and engage with the leaf A.

To the upper end of the spring I) is attached a head, E. This head E is attached to the spring D in such a manner as to prevent the said spring from revolving around it. The upper part of the head E is provided with a ratchet, e, and slots or holes f, whereby said head may be revolved by means of a nail or piece of wire.

Extending from the leaf B and engaging with the ratchet c is a pawl, g, which is made preferably as shown in Fig. 2viz., a piece of sprin g-wire turned at a right angle at its upper end, said turned end passing through a hole and engaging with the ratchet c. The long arm of this pawl fits into a recess in the hingeleaf B, and is secured at its lower end, as shown, or in any other suitable manner. It is a hole made in the leaf B directly over the pawl 9, through which a pointed instrument may be inserted to push the said pawl 9 back and disengage it from the ratchet c.

The operation of my device is as follows: The two leaves A and B are fastened one to the door and the other to the door-frame. A nail or piece of wire is then inserted in one of the slots or holes f and the head E revolved, preferably in such a direction as will tend to wind the spring. As the head E is revolved the pawl g engages with the ratchet c on the head E and prevents the said head or the spring D, to which it is attached,'fr0m turning in the opposite direction,and hence a torsional strain is brought to bear on the two leaves A and B, which is increased as the door is opened, and acts to keep the door in a closed position.

It is obvious that the pawl 9 may be constructed in a diff rent manner from that shown; and that the said pawl g and the head E may be placed at'the lower end instead of. the upper end of the spring, if desired, without departing from my invention.

What I claim is- The combination, with the pintle, ratchet, spiral spring, and leaves A and B, the latter having a perforation, h, of a spring-pawl, g, secured at one end between studs on the inner side of leaf B, and then passing'under the per foration h and terminating in a bent end secured in a perforation of the leaf B, and engaging with said ratchet, substantially asset forth.

Intesthnony whereof I have signed my name to this specification in the presence of two subscribing witnesses.

THEODORE BUTLER.

Witnesses:

HENRY ABELS, ERNEST O. ORsBURN. 

